Upload your PDF and get a structured back-of-book index with hierarchical terms, page references, and cross-references. Works with books, papers, manuals, and more.
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Drop a PDF here or click to select a file
Choose PDFSupports PDF up to 50 MB · Text-searchable PDFs work best
What the tool actually produces for different document types
Martinique, 113 Materialism, 11–12, 16, 19, 92–94, 96, 98–99, 101–103, 108, 268 cosmic dissolution, 104 definition, 107 functional divinity, 101 mechanical view, 101 objection, 106 scientific materialism, 105 Mathematics, 65, 172, 209–210, 245, 255 Matter, 52, 86, 89, 95–96, 98, 105, 233, 239 Matters of Fact, 202 Meaning, 46
Machinery, 1, 23–24, 85, 102, 113, 115, 147 Machinists, 24, 79 Macy's, 34 Magneto, 70, 110 Management, 78, 93, 119, 155, 235, 259 Manchester, 76, 150, 197, 262 Manufacturing, 6, 16–17, 19–21, 47–50, 79, 84, 147, 165–166, 173, 175, 188, 273 Markets, 16, 47, 67, 141, 148, 275 Mass Production, 16, 47, 58, 202, 272 Materials, 14, 17, 90, 110, 274 Meat Industry, 231 Mechanical Drives, 31, 33
Both are real, unedited drafts. The editor lets you rename, merge, add, or remove entries and add subentries before export. See how they compare with the books' original indexes
The AI reads your full document and understands meaning, not just keywords. For example, it distinguishes "bank" as a financial institution vs. a river bank based on surrounding context.
Each term is linked to the specific pages where it appears, with continuous discussions grouped into page ranges (e.g., 45-52) rather than individual page numbers.
The AI identifies related concepts and creates "see" and "see also" references to connect them — linking "machine learning" to "artificial intelligence" or "neural networks."
Everything the AI generates is a starting point. You have full control to rename terms, adjust hierarchy, merge duplicates, and add entries the AI may have missed.
Business, self-help, history, biography — extracts concepts, people, and themes with sub-entries.
Research concepts, methodologies, statistical terms, author references, and theoretical frameworks.
Procedures, equipment names, troubleshooting topics, and safety protocols with precise page references.
Ingredients, techniques, recipe names, and categorical groupings with cross-references.
Get started for free — you only pay once you're satisfied with the results.
Upload your PDF to get started
Drop a PDF here or click to select a file
Choose PDFSupports PDF up to 50 MB · Text-searchable PDFs work best
Works best with text-searchable PDFs from Word, InDesign, or LaTeX
Non-fiction content with clear topical structure produces the best results
Handles books from 50-400 pages; shorter or longer documents may vary
Specialist terminology in niche fields may need manual additions
Fiction indexing (characters, themes) is experimental and less reliable
Scanned-image PDFs without OCR text produce poor or empty results
Upload a PDF and see results in about 15 minutes. Get started for free — only pay once you're satisfied.
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